Pulley and similar construction



May 15, 1923. 1,455,479

. i 'w. F. DAGGETT PULLEY AND SIMILAR CONSTRUCTION Filed Oct. 14. 1920?atented 15"), 19233.

WELLIEAIQ DAGGETT, @F CHIGAG-Q, ILLIN3I.

PULLEY AND SIMILAR CU'EETWERFUUEION.

Application iflledficto'ber 14, 1920. Serial No. 143,885.

To all whom it may concern:

Be it known that l, -i/VILLIAIvI F. DAcen'r'r', a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented a certain new and useful Improvement in Pulleyand Similar Constructions, of which the following is a full, clear,concise, and exact description, reference being had to the accompanyingdrawings, forming a part of this specification.

My invention relates to pulley and similar constructions.

One object of the present invention is to provide a simple, practicaland eiiicient de-' vice of the class specified.

Another object of this invention is to provide a novel and improvedpulley construction and mounting hub structure therefor, in combinationwith novel and simple means for associating supplemental devices withthe pulley, such as a friction clutch device or the like.

Another object of the invention is to secure such combination orassociation in a simple and practical manner, without the need ofadditional parts, or cumbersome or complicated constructions.

In the accompanying drawing Fig. 1 is a longitudinal section ofa pulleydevice embodying my invention, together with a friction drive associatedtherewith;

7 Fig. 2 is a cross section taken on line 2-2 in Fig. 1.

Fig. 3 is a. vertical section of a modified form of device.

Referring to the drawings, and particularly to Figs. 1 and 2, I show arotary shaft 1 which is understood to be a driving or other shaft'onwhich is mounted a pulley construction embodying my present invention.The pulley construction shown in said Figs. comprises a pulley rim 2carrying spokes 33, the pulley wheel thus formed being preferably splitwith its halves secured together by means of bolts-4+4 and 5-5.

This pulley wheel is mounted upon a central hub arrangement comprising atubular hub member 6, the central portion 6 of which is of less diameterthan the end portion 6*. The latter portions 6* form enlargements ofsaid hub 6, the pulley wheel being mounted on said central relativelysmall portion 6 and helid against end removal by the enlarged en 8".

The hub member 6 is mounted upon or provided with ball hearings 7 and 8,which ball bearings are located substantially at the opposite ends ofthe member 6 and comprise inner and outer ball races with interveningballs, the same being arranged within the enlarged end hub portions 6 Acentral sleeve 10 having reduced end portions 11 and 12 is arrangedwithin the hub member 6 and over the rotary shaft 1, said sleeve 10fitting tightly on the shaft 1 and its reduced end portions 11 and 12fitting within and serving as supports or holders for the inner ballraces of the ball bearings 7 and 8. Thus the pulley constructioninvolves a split pulley and a hub towhich said split pulley can beapplied and from which it can be removed, together with ball bearings bywhich the pulley maybe rotated without having such bearings mounted uponor directly associated or connected with the rotary shaft carryingpulley.

At one side or end of the hub member 6 is an end plate or member 14which is secured to the adjacent enlarged end 6 by means of screws 15.This member 14 closes the chamber 16 containing the ball bearing? and ispreferably provided with inwardly projecting shoulders 17 which fitagainst the outer .ball race of the bearing 7 and so serve to holdthesame in position. A ring 18 fits over the reduced end 11 of thesleeve 10 at the outer end of said member 14 and said ring 18 isprovided with a set screw 19 which is arranged to pass through thesleeve end 11- and engage the shaft land thereby hold the sleeve 10firmly. in position on said shaft 1. As a referred arrangement the ring18 is provi ed with a laterally extending portion 20 which fits in acorresponding recess in the member 14.

At the other end of the hub member 6 an end member 21 is provided andthis is referably secured to the adjacent enlarge end 6 by means ofscrews 22. This member 21 issimilar to the member 14 in that it servesas a closure for the space or chamber 23 containingthe ball bearing 8and \is provided with an inwardly extending annular shoulder or rib 24which fits against the outer ball race of the bearing 8 and so holds thesame in position. Said member 21, however, has

a portion 25 which extendslongitudinally of the shaft 1 and has a bore26 somewhat larger than the shaft 1, so that said member frictionmembers mounted on said extension and keyed thereto and a rim membermounted on t e shaft and ke ed to the same.

7. A device of the c ass specified, comprisingia tubular hub membercarrying a pulley an provided with anti-friction bearing devices anextension at one side of said hub member, said extension extendinglengthwise of the shaft 'on which the device is mounted but fittedloosely over the same, and a supplemental device having a hub portionfixedly mounted on said shaft, and said extension forming an additionalhub for said supplemental device.

8. In combination, a rotary shaft, a sleeve fixedly supported on saidshaft, a hub embracing said shaft and sleeve and in, spaced relation tothe latter, enlarged ends on said hub, ball hearings in said enlargedends supported therebv and by said sleeve, means for retaining thebearin s against longitudinal displacement, a supp emental device havingone portion fixedly secured to said shaft and another portion adaptedfor relative movement, and a longitudinal extension formed on saidretaining means and embracing but spaced from the shaft and supportingthe relatively movable portion of said supplemental device.

' 9. In combination, a shaft, a hub surrounding but s aced from saidshaft, a'sleeve fixedly secure to the shaft within said hub,

said hub having enlar ed end chambers, ball bearin s in said cham ersand supported on said s eeve, a supplemental devlce having fixedconnection to the shaft, and means for retaining said bearings, saidmeans having a longitudinal extension thereon affording a support for apart of said supplemental dev1ce.

In witness whereof, I hereunto subscribe my name this 8th day ofOctober, A. D., 1920.

WILLIAM F. DAGGETT.

